Wood fireplaces are a great way to heat a large area including large homes, garages, or rooms for community events. However, it depends on what type of wood fireplace you have on how quickly it will heat a space. Some wood fireplaces are actually the biggest waste of heat in a home, but let’s be honest, walking into a room with a wood fire burning just does something to your soul.
Three basic categories of the heat output of a wood fireplace.
The big, open wood-burning fireplace that doesn’t have a heat exchanger (even though it has fans as an option) will suck heat out of your house faster than you can feed it wood. These fireplaces are decorative, and there isn’t any magic wand to make them put out heat in an emergency. They just don’t.
Mid-efficiency fireplaces will have some sort of air control to slow the rate of burn, but won’t seal tight and have controlled combustion. These fireplaces will provide good heat in an emergency and you can open the doors and use them for looks as well.
High-efficiency fireplaces will put out heat almost always. They can have optional screen door facings to use open, but not all the time. When the doors are shut, these fireplaces can heat up to 3500 sq ft with under 4 cords of wood per year. Overnight burn times are the norm and they require good dry wood to achieve optimum performance.